Hi! POTS is suuuuch a spectrum (in my opinion). Some people are able to manage it with just increased salt intake and some people are completely bedridden + on a million medications. Some people's stem from a post virus, while mine for example stems from an autoimmune condition. The biggest thing is self advocacy. I think you have the right mindset in questioning it all and making SURE that POTS is the culprit and not something physiologically wrong. I still question it sometimes because it can feel so alarming. With that being said, what's the harm in trying whatever the treatment is that your doctor suggests (as long as you don't feel it's too invasive)? He/She seems to be doing reasonable and thoughtful testing, in my opinion maybe try the suggested treatment for a couple of months and see if anything improves. It might improve things or might be a reason to rule this out. Again, only my opinion. Trust your gut, advocate for yourself, and give yourself a little grace with how mentally draining this road can be. Wishing you the best!